Rubber Band Racers Block and makes us laugh

and makes us laugh

16 Thief cards

Step up to a new level of racing fun with the "GraviTrax POWER Elevator" and automatically lift your marble run to new heights

and all the wonders along the way

Rubber Band Racers Block and makes us laughFly into physics fun with five awesome models driven by a rubber band powered propeller. Using ultralight plastic and bamboo parts, build a helicopter, airboat, airplane, fan car, and hydrofoil. Learn how the elastic material stores energy and then releases it to move the models. Product Information Ages: 8+ Experiments: 5 Piece Count: 72 Manual Pages: 16 Product Dimensions: 8. 75 x 11 x 1. 7 in. Product Weight: 0. 5 lbs Manual Dimensions: 5. 5 x 8.